Hi, I A Chevy hhr ls and I took a trip to ca from okc and about a hundred miles in the tire pressure was dropping fast so I threw in a bottle of fix a flat and about a hr after I noticed the traction light come on, I figured I hit the button so I turn it off and keep going, then the light comes on again and I push the traction Button and it goes off again. A while later the speedometer started going crazy and traction and anti theft light came on along with tpms I believe and said service ect (or ext) off also said power steering or somthing like that and flashed other lights and started shifting hard. Then it stopped acting crazy on the cluster just had the theft and traction light on and shifting hard, and when I would push the button it wouldn’t turn off. I had to drive it like this the rest of the way, when I put the fix a flat in it was cold like 25 degrees and was 25-50 the whole way. I put a new battery in that had more cca then called fire before I left and also changed oil and filter, air filter cabin filter intake manifold hose was ripped, changed with aftermarket hose because autozone didn’t have the part in their system for some reason. I also had a obd reader hooked up and couldn’t get it to show any code. Then it said couldn’t connnect. Please let me know if you have seen this or have any ideas. I’m going to check the wires from the obd and replace the tires but the mechanics I been to said it wouldn’t be the fix a flat causing that. But they also said that know little about hhr cars. Thanks in advance

 

Seems like a weak battery, even a new battery can be weak or defective.

 

Quote: "I also had a obd reader hooked up and couldn’t get it to show any code. Then it said couldn’t connnect."

Check the cigarette lighter fuse. ( #29 in the engine compartment fuse block.) That fuse powers the OBD port.

 

That fix a flat, is for temporary use only. It's designed to get you to the nearest tire shop. It may have ruined the tpms sensor in that tire. Who knows how evenly the goop distributed in there, you may have a badly out of balance tire.

Do yourself a favor. Go to an auto salvage yard, and get a spare tire, Jack, etc. Throw that goop away. You might even get charged to clean it off the wheel.

 

Check the connection point of the large red wire to the fuse box. Sounds like a loose wire to me.

Consider this; the inside of the fuse box may have loosed or some connections may be corroded/fried.

 

Similar problems, have a read thru this thread

https://www.chevyhhr.net/forums/prob...o-crank-56962/